code: def __init__(self, **kwargs):
      self._fetch_info_list = []
      self._no_conditions = True
  
file_path: mars/mars/services/task/execution/ray/fetcher.py
imports: import asyncio
  import functools
  from collections import namedtuple
  from typing import Dict, List
  from .....utils import lazy_import
  from ..api import Fetcher, register_fetcher_cls
label_desc: Use image node_id 1 to create a new RayFetcher object from inherited base classes: Fetcher with example: obj = RayFetcher()